John Ladd, who raises beef cattle at the San Jose Ranch on the border, said he's seen a 90 to 95 percent drop in illegal immigrant crossings since Trump was elected and since they put an 18-foot-high Ballard fence on their property.

"With that activity, it's almost nonexistent to see an illegal anymore," Ladd said.

Fred Davis, who runs a ranch near Tombstone, Arizona, mere miles from Mexico, pointed out that most communities near the border already have high fences.

He explained that the proposed border wall is necessary to protect outlying areas that only have a barbed wire fence, which is where most illegal immigrants enter the country.

“The wall itself is just a tool in the kit, but you’ve gotta put boots on the ground to go with it to make it effective," Davis added. "And that’s been part of the problem in places they have a wall now."

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Former Acting ICE Director Thomas Homan said Tuesday on "The Ingraham Angle" that if Republicans and Democrats in Congress closed "loopholes" in the law that allow for "catch and release" and other perceptively problematic situations, the migrant caravans would cease to exist.